sfa/rspecs/versions/pgv2.py

   1 from copy import deepcopy
   2 from StringIO import StringIO
   3 from sfa.util.xrn import Xrn, urn_to_sliver_id
   4 from sfa.util.plxrn import hostname_to_urn, xrn_to_hostname
   5 from sfa.rspecs.baseversion import BaseVersion
   6 from sfa.rspecs.elements.versions.pgv2Link import PGv2Link
   7 from sfa.rspecs.elements.versions.pgv2Node import PGv2Node
   8 from sfa.rspecs.elements.versions.pgv2SliverType import PGv2SliverType
   9
  10 class PGv2(BaseVersion):
  11     type = 'ProtoGENI'
  12     content_type = 'ad'
  13     version = '2'
  14     schema = 'http://www.protogeni.net/resources/rspec/2/ad.xsd'
  15     namespace = 'http://www.protogeni.net/resources/rspec/2'
  16     extensions = {
  17         'flack': "http://www.protogeni.net/resources/rspec/ext/flack/1",
  18         'planetlab': "http://www.planet-lab.org/resources/sfa/ext/planetlab/1",
  19     }
  20     namespaces = dict(extensions.items() + [('default', namespace)])
  21
  22     # Networks
  23     def get_networks(self):
  24         network_names = set()
  25         nodes = self.xml.xpath('//default:node[@component_manager_id] | //node[@component_manager_id]', namespaces=self.namespaces)
  26         for node in nodes:
  27             if 'component_manager_id' in node.attrib:
  28                 network_urn = node.get('component_manager_id')
  29                 if network_urn.startswith("urn:"):
  30                     network_hrn = Xrn(network_urn).get_hrn()[0]
  31                 else:
  32                     # some component_manager_ids are hrns instead of urns??
  33                     network_hrn = network_urn
  34                 network_names.add(network_hrn)
  35         network_names = list(network_names)
  36         networks = [{"name": x} for x in network_names]
  37         return networks
  38
  39     # Nodes
  40
  41     def get_nodes(self, filter=None):
  42         return PGv2Node.get_nodes(self.xml, filter)
  43
  44     def get_nodes_with_slivers(self):
  45         return PGv2Node.get_nodes_with_slivers(self.xml)
  46
  47     def add_nodes(self, nodes, check_for_dupes=False):
  48         return PGv2Node.add_nodes(self.xml, nodes)
  49
  50     def merge_node(self, source_node_tag):
  51         # this is untested
  52         self.xml.root.append(deepcopy(source_node_tag))
  53
  54     # Slivers
  55
  56     def get_sliver_attributes(self, hostname, network=None):
  57         nodes = self.get_nodes({'component_id': '*%s*' %hostname})
  58         attribs = []
  59         if nodes is not None and isinstance(nodes, list) and len(nodes) > 0:
  60             node = nodes[0]
  61             sliver = node.xpath('./default:sliver_type', namespaces=self.namespaces)
  62             if sliver is not None and isinstance(sliver, list) and len(sliver) > 0:
  63                 sliver = sliver[0]
  64                 #attribs = self.attributes_list(sliver)
  65         return attribs
  66
  67     def get_slice_attributes(self, network=None):
  68         slice_attributes = []
  69         nodes_with_slivers = self.get_nodes_with_slivers()
  70         # TODO: default sliver attributes in the PG rspec?
  71         default_ns_prefix = self.namespaces['default']
  72         for node in nodes_with_slivers:
  73             sliver_attributes = self.get_sliver_attributes(node, network)
  74             for sliver_attribute in sliver_attributes:
  75                 name=str(sliver_attribute[0])
  76                 text =str(sliver_attribute[1])
  77                 attribs = sliver_attribute[2]
  78                 # we currently only suppor the <initscript> and <flack> attributes
  79                 if  'info' in name:
  80                     attribute = {'name': 'flack_info', 'value': str(attribs), 'node_id': node}
  81                     slice_attributes.append(attribute)
  82                 elif 'initscript' in name:
  83                     if attribs is not None and 'name' in attribs:
  84                         value = attribs['name']
  85                     else:
  86                         value = text
  87                     attribute = {'name': 'initscript', 'value': value, 'node_id': node}
  88                     slice_attributes.append(attribute)
  89
  90         return slice_attributes
  91
  92     def attributes_list(self, elem):
  93         opts = []
  94         if elem is not None:
  95             for e in elem:
  96                 opts.append((e.tag, str(e.text).strip(), e.attrib))
  97         return opts
  98
  99     def get_default_sliver_attributes(self, network=None):
 100         return []
 101
 102     def add_default_sliver_attribute(self, name, value, network=None):
 103         pass
 104
 105     def add_slivers(self, hostnames, attributes=[], sliver_urn=None, append=False):
 106         # all nodes hould already be present in the rspec. Remove all
 107         # nodes that done have slivers
 108         for hostname in hostnames:
 109             node_elems = self.get_nodes({'component_id': '*%s*' % hostname})
 110             if not node_elems:
 111                 continue
 112             node_elem = node_elems[0]
 113
 114             # determine sliver types for this node
 115             valid_sliver_types = ['emulab-openvz', 'raw-pc', 'plab-vserver', 'plab-vnode']
 116             requested_sliver_type = None
 117             for sliver_type in node_elem.get('slivers', []):
 118                 if sliver_type.get('type') in valid_sliver_types:
 119                     requested_sliver_type = sliver_type['type']
 120
 121             if not requested_sliver_type:
 122                 continue
 123             sliver = {'name': requested_sliver_type,
 124                      'pl_tags': attributes}
 125
 126             # remove existing sliver_type tags
 127             for sliver_type in node_elem.get('slivers', []):
 128                 node_elem.element.remove(sliver_type.element)
 129
 130             # set the client id
 131             node_elem.element.set('client_id', hostname)
 132             if sliver_urn:
 133                 pass
 134                 # TODO
 135                 # set the sliver id
 136                 #slice_id = sliver_info.get('slice_id', -1)
 137                 #node_id = sliver_info.get('node_id', -1)
 138                 #sliver_id = urn_to_sliver_id(sliver_urn, slice_id, node_id)
 139                 #node_elem.set('sliver_id', sliver_id)
 140
 141             # add the sliver type elemnt
 142             PGv2SliverType.add_slivers(node_elem.element, sliver)
 143
 144         # remove all nodes without slivers
 145         if not append:
 146             for node_elem in self.get_nodes():
 147                 if not node_elem['client_id']:
 148                     parent = node_elem.element.getparent()
 149                     parent.remove(node_elem.element)
 150
 151     def remove_slivers(self, slivers, network=None, no_dupes=False):
 152         PGv2Node.remove_slivers(self.xml, slivers)
 153
 154     # Links
 155
 156     def get_links(self, network=None):
 157         return PGv2Link.get_links(self.xml)
 158
 159     def get_link_requests(self):
 160         return PGv2Link.get_link_requests(self.xml)
 161
 162     def add_links(self, links):
 163         PGv2Link.add_links(self.xml.root, links)
 164
 165     def add_link_requests(self, link_tuples, append=False):
 166         PGv2Link.add_link_requests(self.xml.root, link_tuples, append)
 167
 168     # Utility
 169
 170     def merge(self, in_rspec):
 171         """
 172         Merge contents for specified rspec with current rspec
 173         """
 174         from sfa.rspecs.rspec import RSpec
 175         # just copy over all the child elements under the root element
 176         if isinstance(in_rspec, basestring):
 177             in_rspec = RSpec(in_rspec)
 178
 179         nodes = in_rspec.version.get_nodes()
 180         # protogeni rspecs need to advertise the availabel sliver types
 181         for node in nodes:
 182             if not node.has_key('sliver') or not node['sliver']:
 183                 node['sliver'] = {'name': 'plab-vserver'}
 184
 185         self.add_nodes(nodes)
 186         self.add_links(in_rspec.version.get_links())
 187
 188         #
 189         #rspec = RSpec(in_rspec)
 190         #for child in rspec.xml.iterchildren():
 191         #    self.xml.root.append(child)
 192
 193
 194
 195     def cleanup(self):
 196         # remove unncecessary elements, attributes
 197         if self.type in ['request', 'manifest']:
 198             # remove 'available' element from remaining node elements
 199             self.xml.remove_element('//default:available | //available')
 200
 201 class PGv2Ad(PGv2):
 202     enabled = True
 203     content_type = 'ad'
 204     schema = 'http://www.protogeni.net/resources/rspec/2/ad.xsd'
 205     template = '<rspec type="advertisement" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2 http://www.protogeni.net/resources/rspec/2/ad.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 206
 207 class PGv2Request(PGv2):
 208     enabled = True
 209     content_type = 'request'
 210     schema = 'http://www.protogeni.net/resources/rspec/2/request.xsd'
 211     template = '<rspec type="request" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2 http://www.protogeni.net/resources/rspec/2/request.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 212
 213 class PGv2Manifest(PGv2):
 214     enabled = True
 215     content_type = 'manifest'
 216     schema = 'http://www.protogeni.net/resources/rspec/2/manifest.xsd'
 217     template = '<rspec type="manifest" xmlns="http://www.protogeni.net/resources/rspec/2" xmlns:flack="http://www.protogeni.net/resources/rspec/ext/flack/1" xmlns:planetlab="http://www.planet-lab.org/resources/sfa/ext/planetlab/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.protogeni.net/resources/rspec/2 http://www.protogeni.net/resources/rspec/2/manifest.xsd http://www.planet-lab.org/resources/sfa/ext/planetlab/1 http://www.planet-lab.org/resources/sfa/ext/planetlab/1/planetlab.xsd"/>'
 218
 219
 220
 221
 222 if __name__ == '__main__':
 223     from sfa.rspecs.rspec import RSpec
 224     from sfa.rspecs.rspec_elements import *
 225     r = RSpec('/tmp/pg.rspec')
 226     r.load_rspec_elements(PGv2.elements)
 227     r.namespaces = PGv2.namespaces
 228     print r.get(RSpecElements.NODE)